28686840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 256

約数和(自身を含む): 110315520

約数和(自身を除く): 81628680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 37, 39, 40, 42, 52, 56, 60, 65, 70, 71, 74, 78, 84, 91, 104, 105, 111, 120, 130, 140, 142, 148, 156, 168, 182, 185, 195, 210, 213, 222, 259, 260, 273, 280, 284, 296, 312, 355, 364, 370, 390, 420, 426, 444, 455, 481, 497, 518, 520, 546, 555, 568, 710, 728, 740, 777, 780, 840, 852, 888, 910, 923, 962, 994, 1036, 1065, 1092, 1110, 1295, 1365, 1420, 1443, 1480, 1491, 1554, 1560, 1704, 1820, 1846, 1924, 1988, 2072, 2130, 2184, 2220, 2405, 2485, 2590, 2627, 2730, 2769, 2840, 2886, 2982, 3108, 3367, 3640, 3692, 3848, 3885, 3976, 4260, 4440, 4615, 4810, 4970, 5180, 5254, 5460, 5538, 5772, 5964, 6216, 6461, 6734, 7215, 7384, 7455, 7770, 7881, 8520, 9230, 9620, 9940, 10101, 10360, 10508, 10920, 11076, 11544, 11928, 12922, 13135, 13468, 13845, 14430, 14910, 15540, 15762, 16835, 18389, 18460, 19240, 19383, 19880, 20202, 21016, 22152, 25844, 26270, 26936, 27690, 28860, 29820, 31080, 31524, 32305, 33670, 34151, 36778, 36920, 38766, 39405, 40404, 50505, 51688, 52540, 55167, 55380, 57720, 59640, 63048, 64610, 67340, 68302, 73556, 77532, 78810, 80808, 91945, 96915, 101010, 102453, 105080, 110334, 110760, 129220, 134680, 136604, 147112, 155064, 157620, 170755, 183890, 193830, 202020, 204906, 220668, 239057, 258440, 273208, 275835, 315240, 341510, 367780, 387660, 404040, 409812, 441336, 478114, 512265, 551670, 683020, 717171, 735560, 775320, 819624, 956228, 1024530, 1103340, 1195285, 1366040, 1434342, 1912456, 2049060, 2206680, 2390570, 2868684, 3585855, 4098120, 4781140, 5737368, 7171710, 9562280, 14343420, 28686840]

約数ペア:

[(1, 28686840), (2, 14343420), (3, 9562280), (4, 7171710), (5, 5737368), (6, 4781140), (7, 4098120), (8, 3585855), (10, 2868684), (12, 2390570), (13, 2206680), (14, 2049060), (15, 1912456), (20, 1434342), (21, 1366040), (24, 1195285), (26, 1103340), (28, 1024530), (30, 956228), (35, 819624), (37, 775320), (39, 735560), (40, 717171), (42, 683020), (52, 551670), (56, 512265), (60, 478114), (65, 441336), (70, 409812), (71, 404040), (74, 387660), (78, 367780), (84, 341510), (91, 315240), (104, 275835), (105, 273208), (111, 258440), (120, 239057), (130, 220668), (140, 204906), (142, 202020), (148, 193830), (156, 183890), (168, 170755), (182, 157620), (185, 155064), (195, 147112), (210, 136604), (213, 134680), (222, 129220), (259, 110760), (260, 110334), (273, 105080), (280, 102453), (284, 101010), (296, 96915), (312, 91945), (355, 80808), (364, 78810), (370, 77532), (390, 73556), (420, 68302), (426, 67340), (444, 64610), (455, 63048), (481, 59640), (497, 57720), (518, 55380), (520, 55167), (546, 52540), (555, 51688), (568, 50505), (710, 40404), (728, 39405), (740, 38766), (777, 36920), (780, 36778), (840, 34151), (852, 33670), (888, 32305), (910, 31524), (923, 31080), (962, 29820), (994, 28860), (1036, 27690), (1065, 26936), (1092, 26270), (1110, 25844), (1295, 22152), (1365, 21016), (1420, 20202), (1443, 19880), (1480, 19383), (1491, 19240), (1554, 18460), (1560, 18389), (1704, 16835), (1820, 15762), (1846, 15540), (1924, 14910), (1988, 14430), (2072, 13845), (2130, 13468), (2184, 13135), (2220, 12922), (2405, 11928), (2485, 11544), (2590, 11076), (2627, 10920), (2730, 10508), (2769, 10360), (2840, 10101), (2886, 9940), (2982, 9620), (3108, 9230), (3367, 8520), (3640, 7881), (3692, 7770), (3848, 7455), (3885, 7384), (3976, 7215), (4260, 6734), (4440, 6461), (4615, 6216), (4810, 5964), (4970, 5772), (5180, 5538), (5254, 5460)]